When we cry, our top lip starts to wobble and so this gave rise to the idiom a stiff upper lip, meaning to not show your feelings when you are upset, even though it is difficult not to.
Exactly how or why Fazza came by the engraving in the first place is a mystery, but there was no mystery about the origins of the toolbox—he made it himself.
No one knew anything about his family. While the society of up-country Georgia was not so impregnable as that of the Coast aristocrats, no family wanted a daughter to wed a man about whose grandfather nothing was known.